Not something I have ever heard of at the track or elsewhere. If you have a tear, you have a bow. I really liked cool cast for new bows, I kept one in the fridge at the track just in case. You can splash it with alcohol to reactivate it after it has dried out or take it off to cold hose or ice and put a new one on. http://www.bigdweb.com/Cool-Cast-Ban...ductinfo/1311/
Not something I have ever heard of at the track or elsewhere.
Yeah, not something I ever heard in years of doing track lay-ups, either. (Pro)filing that away in the memory bank
Obviously follow your vet's advice, but it's hard to go wrong with cold for a fairly fresh injury. A good pair of ice boots/cold wraps applied for 15-20 minutes 2-4 times a day, with a standing wrap on in between to keep some pressure on and prevent fluid from accumulating in the lesion worked well for me, perhaps paired with a topical anti-inflammatory. I usually hand grazed when I had a horse in ice boots if I had time (and they would behave) so they weren't getting so bored in their stall. Good luck!
As Peter, Paul, and Mary say, a dragon lives forever.